fix clippy warnings #4

	name: Check, Build and Test

	on: [push, pull_request]

	jobs:
	ci:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	rust-toolchain: [nightly]
	targets: [riscv64gc-unknown-none-elf]
	steps:
	- uses: actions/checkout@v4
	- uses: taiki-e/install-action@v2
	with:
	tool: cargo-hack,cargo-binutils
	- uses: dtolnay/rust-toolchain@nightly
	with:
	toolchain: ${{ matrix.rust-toolchain }}
	components: rust-src, clippy, rustfmt
	targets: ${{ matrix.targets }}
	- name: Check rust version
	run: rustc --version --verbose
	- name: Check code format
	run: cargo fmt --all -- --check
	- name: Clippy
	run: cargo hack clippy --target ${{ matrix.targets }} --each-feature -- -D warnings
	- name: Build
	run: cargo hack build --target ${{ matrix.targets }} --each-feature

	- name: Clippy on testos
	working-directory: example/testos
	run: cargo clippy --target ${{ matrix.targets }} -- -D warnings

	- name: Build testos
	working-directory: example/testos
	run: cargo build --target ${{ matrix.targets }}

	# FIXME: cp: cannot create regular file '../../../tftpboot/': Not a directory
	- name: Run testos
	run: cd example && make all

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